Pump-shaft-casing compressor



l ,550, l 94k c. F. zlMANsKY PUMP SHAFT CASING' COMPRESSOR A Y Filed Feb. y11,l 1924 2 Sheets-sheet '1 Aug. 1s, 1925.

5' Lil Aug. 18, 1925. 1,550,194 v c. F. zlMANsKY PUMP SHAFT cAsING COMPRESSOR Filed Feb. ll, 1924 2 Sheets-Sheet 2 Patented Aug. 18, 1925.

. .UNITEDSTATES PATENT ()yFFICl-I.vvv

GUET F. ZIMANSKY, 0F SAN FRANCISCO, CALIFDBNI'VA, ASSIGNOR T0 G. .PRICE PUMP .AND` ENGINE COMPANY, 0F SAN FRANCISCO, CALIFORNIA. A

rUnr-smw-casme connaissent.

Application led February 11, 1924. Serial Ro. 692,025.

To all when?, it may concern.'

` Be it 'known that I, CURTA F. ZIMANSKY,

a citizen of the United States, residing in the city and county of VSanFrancisco and l State of California, have invented a new and useful Improvement in a Pump-Shaft- Casing Compressor, of which the following is a specification.

My invention relates to improvements in 'well pumps and particularly to an improved means for placing a shaft casing under compression. ,i' i l This invention isan improvement upon my former invention, Serial No. 471,457, filed May 21st, 1921, reference to which is hereby'made, in which application I have disclosed an improved construction including a shaft casing placed under compression in order to give rigidity to the structure and to prevent whipping of the shaft within the well.

In my former invention the upper end of the shaft'casing was engaged by the main y head bearing of the shaft, the entire head bearing and mounting Itherefore being i `moved downwardly against the topl of the shaft casing to exert a pressure thereagainst and thereby place 'the casing under compression. Experience has shown that in operation this construction causes any vibration present in the head bearing to be communicated to na large extent directly to the shaft casing. Furthermore, the play ypresent in the shaft and head bearing prevents the application of a constant pressure upon the shaft casing. My'present invention 1s therefore drawn to an improvedmeans for applyi'n pressure to the shaftcasing, the obk jects eingto simplify the construction, to

thecompressing means, to eliminate vibra'- tionA f m the head shaft, and to permit a consta pressure to be applied independently o the head bearing of the pump, and also to prevent the admission of oilfrom the shaft casing into the main'head'bearing.

' I accomplish these Yand other objects by means of the device disclosed in the draw'- ings forming a part ofthe present specilica' tion wherein like characters of reference are 4 used to designate similar parts throughout said `specification and drawings, and in which:

Figs. 1 Vand Ylshow a .vertical Section `of facilitate-the assembly and adjustment ofv a well pump showing the application of my mvention thereto. 1

Fig. 2 is a broken vertical section of the i Referring to .the drawings. the numeral y1 1s 'used to designate in general a pump shaft connected between a well pump 2' and the top of a well and providedV with the usual,`

pulley 3 and head bearing 4. The shaft 1 is enclosed within a shaft casing 6 extending from the pump to the top ofthe well, said pump and shaft casing being in turn en-I closed in a pump casing 7.

As stated in my former. application above i referred to, it is. desirable in many cases to subject the, pump casing 7 to tension and to place the shaft casing under'compression so Y that the stresses in each member will combine to form a rigid construction such as will effectually resist the tendency of the shaft to whip within the well. In m present invention the shaft casing 6 is su jected to a compressive-stress in the following manner. The shaft casing '6 is continued to a point above the top of the well but slightly below the head bearing 4 of pump. A member Sprovided with an annular shoulder 9 arranged to engage the end of the casing 6 is applied overl the shaft below the head bearing, and entirely independently thereof. The member 8 is also provided with a ange 11 having lateral extensions 12 upon opposite sides of thevshaft. `Apertures 13 arev formed in the extensions 12 to receive bolts 14 connected to the discharge housing member 16 at the top of the well. Nuts 17 are threaded onto the upper end s ofthe bolts 14 and arranged to bear against the extensions 12 whereby.the member 8 may be moved .downwardly to cause the shoulder 9 to ap-y 'ply the desired amount of pressure upon the shaft casing 6. A. stuing land 20 actuated by bolts 21 is mounte below the member 8, upon the 'e casing 6, said bo1ts'21 being. arranged to engage extensions 22 disposed at right angles tothe extenslonsv 12 as best shown in Fig. 3 ofsthe drawings.

los

The. member is preferably made as an auxiliary bearingto igive additional bearing support for the sha a reduced extension 18 being arranged to extend into the top of the casing 6 to give additional bearing surface. A bushing 19 is fitted into the memlloer 8 to receive the shaft. The additional ment by virtue of an une ual tighteningV against 'the top of'the sha casing is entirely eliminated. A further advantage of partlcular importance is the fact'that by eliminating the connection between the top of the shaft casing and the head bearing I have insured against the passage of oil fromthe casing into the head bearing, which issometimes caused by back pressure Within 'the shaft casing. As dirt and grit is sometimes accumulated and carried into the head bearing by such oil with much damage to the bearing the advantage of my improved constructiongin this respect Will be readily seen. j

Having thus described my invention what I elaimas new and desire -togsecure by Letters Patent is:

pump shaft therein provided with the usual head bearing, of a member `mounted upon the shaft in engage-v v l ment with the casing; and means for movlng said member independently from the head bearing toplace the casing under compression.

2. In a well pump, the combination with a shaft casing and a ump shaft therein provided with the usua head bearing, of lmeans I movable independently from the head bear-` ing for placing said shaft casing under' com` pression.

facili- 1. In a well pump, the combination with a shaft` casing and a 3. In a well pump, the combination with a shaft casing and a pump shaft mounted therein and provided with the usual head bearing, of an auxiliary bearing mounted upon the shaft independently from the head bearing, said auxiliary bearing being arranged to engage the upper end of the shaft casing; and means for moving said auxiliary bearing to place the shaft casing under compression.

4. In a well pump, the combination with a shaft casing and a pump mounted therein and provided with the usual head bearing of-a member mounted upon `the shaft indeendently from thehead bearing, a shoulder ormed upon said member to engage the upper end of the shaft casing; and means for moving said member to exert a pressure against the top of said casing under compression.

5. In a well p'ump, the combination with a shaft 'casing and a pump shaftl mounted .therein and provided with the usual head bearing, of an auxiliary bearing mounted upon the shaft adjacent the head bearing vbut independent thereof; a shoulder formed upon the auxiliary bearing to engage the upper end of the shaft casing; and means for moving said auxiliary bearing to exert a pressure against the top of the casing and y thereby place said casing under compression.

6. In a Well pump, the combination with a shaft casing and a pump shaft mounted therein and provided with the usual head b'earin'g, of a member mounted adjacent the head bearing and movable independently therefrom; a shoulder formed upon said member to engage the upper-. end of the shaft casing; a ange formed upon the member and extending laterally therefrom upon opposite sides thereof; and bolts engaging said flange for forcing the shoulder against the shaft casing for placing rthe same under compression. 1

In witness whereof I hereunto set my signature.

C. F. ZIMANSKY. 

